154 
CIDARIA. By L. B. Protit. 
acalles. 
postpcdlida. 
suhfalcata. 
umbrosaria. 
insulata. 
pliaedropa. 
angustaria. 
fidvotincta. 
of this pretty form. Expanse 35 mm (larger than normal dimita). Lighter, both as to the ground-colour and 
the dark markings. Forewing with median band not very broad, the space between it and basal patch almost 
as broad as the basal patch; distal area with somewhat more yellow-brown admixture and with the dark wedge- 
marks before and behind the 5th subcostal large. The whitish hindwing shows in the type (but not in the para- 
type) a larger cell-mark than in any d. dimita. known to me. Koko-nor, type $ hr the Tring Museum; “X. Tibet” 
(almost certainly topotypical), paratype <§ in my collection. 
C. acalles sp. n. (15 e). Smaller and much darker and more uniform, cpiite the most dingy of the silac- 
eata group. Median band broad, not at all marked with white, even the encroachments of the white postmedian 
line very slight; proximal-subterminal “wedge” markings, except the anterior two, weak or wanting; terminal 
black line nearly as in dimita; but not accompanied by a white line proximally. The hindwing, though dark, 
shows a conspicuous cell-dot above; its postmedian line somewhat more distally placed than in silaceata, the 
white band outside it narrowed. Kwanhsien in July and August, large numbers sent by Mr. G. M. Franck; 
type in my collection. The $ valve, unlike those of the two preceding species, is rounded, not “peaked” (tapered), 
its ventral margin somewhat more strongly chitinized. 
C. posipallida sp. n. (15 e). A larger species than dimita and with the distal margin of the forewing 
appreciably more oblique, though somewhat less than in subfalcata Warr. Pale dorsal line of abdomen generally 
less complete. Forewing with proximal area not very sharply marked; median area moderately broad, the 
white line which distally bounds it wider than in the related species, very conspicuous, straightish almost to 
the 3rd radial, where there is a very small indentation, bent inward between this and 2nd submedian and forming 
irregular teeth inward on the medians; the pale line beyond it not white, not sharply defined (more as in falsi- 
loqua); subterminal at costal end strong and highly zigzag, the “wedge” marks here confluent proximally; 
terminal line generally broken into dots and strigulae, its white proximal line fragmentary, in cellule 3 confluent 
with a conspicuous white or white-yellowisli spot on the (mostly cloudy) fringe. Hindwing pale, generally con¬ 
spicuously white and rather glossy, its distal area with indications of postmedian line and with dusky subter¬ 
minal and terminal shades. Distal area of both wings beneath more strongly marked than in dimita. Valve 
with apex rounded, not “peaked”. W. China and Chinese Tibet: Ta-tsien-lu (loc. typ.), Ta-ho and Hou-kow. 
Also 1 § from Narkundah, Kashmir, showing no tangible distinction. A short but adequate series in the British 
Museum. 
C. subfalcata Warr. (15 e). Abdomen of d at least as slender as in postpallida, perhaps still more so. 
Forewing, at least in the <$, with termen still more oblique and sinuous; less dark shading between basal and 
median band; antemedian variable, in the type scarcely angled outward at median vein; postmedian with 
anterior part less straight, with small indentations at the veins and with an appreciable curve close to costa, 
which it therefore reaches somewhat obliquely outward; distal area more weakly marked, the dark terminal 
patch behind the white apical streak somewhat broken. Kulu (type) and Simla. 
C. umbrosaria Motsch. (15 f). Palpus longer than in silaceata and its nearest relatives. Wings more 
elongate. Forewing with the proximal boundary of the median band, which in the overwhelming majority of 
silaceata is angled inward in the middle, much more shallowly and ronndedly curved, the distal on the whole 
more regular, approaching that of capitata. The dusky hindwing and (in the typical race) the suppression of 
the yellowish tone of the forewing recall silaceata deflavata. The genitalia show several distinctions — more 
pointed saccus, larger aedoeagus, etc.; and there is within the 3rd—4th abdominal somites of the d a long and 
strong mass of densely compacted hair (without doubt a scent-organ), of which the outward manifestation is 
a pair of latero-ventral hair-tufts on somite 4. Japan, common. — ab. insulata nov. An extremely rare occur¬ 
rence in umbrosaria, the white ante- and postmedian connected by a white streak behind the 2nd median; 
represented by i d from Tokyo, June 1926, in a series of over 100 Japanese umbrosaria in the Tring Museum. 
phaedropa subsp. nov. (15 f). On an average smaller, hindwing generally with some white costally, sometimes 
also in distal area; forewing with the area which succeeds the white postmedian line almost always paler and 
with more ochreous admixture. Bears much the same relationship to umbrosaria as does typical silaceata to 
deflavata. Ussuri and Mongolia, in fairly long series, also a fe\v from some localities in E. China and Corea; 
type from Narva, S. Ussuri (Karoakoff), coll. Brit. Mus. As the few which I have been able to get together 
from Szechuan show a mixture of this form with almost typical umbrosaria, we have possibly to do with two 
species; but the differences in the genitalia are quite slight and unimportant. 
C. angustaria Leech (14 b) is clearly another species, even narrower winged. I still know only the original 
pair (Vol. 4, p. 250). 
Co fulvotincta Hmps. (1 5 f) is nearly related to umbrosaria but is quite the brightest and most con¬ 
trastingly marked of the whole group. A further characteristic is that the dark terminal patch show's an ad- 
